Nothing stock about this set up. was thinking outside box: made mistake! now trying to correct it. 10 gear is 2nd overdrive .75 10 spd eaton autoshift. My housing will only except 4:30 highest gear since I have antilock brakes involved. Latest info I have recieved as of tonight. The 3:21 gear was a possibility but was informed it would not fit housing. Still searching. Option is just turn engine tighter or look for a antilock housing complete with a 3:50 or higher gear. Learning as I go here. My engine print out list hp and torque @ 2150 and have been told 2350 is not unheard of. Would be happy at 1900rpm. about 70mph. Learning is expensive.... Bob